76 HOLOSPIRA. 



3. H. GOLDFUSSI (Menke). PL 21, figs. 30-35. 



Shell rimate or perforate, cylindric with a rather long, grad- 

 ually tapering terminal cone, dull flesh tinted. Surface lus- 

 treless, sculptured with strong riblets, which are decidedly 

 arcuate on the lower whorls, straighter and more oblique 

 above; the nepionic 214 whorls smooth. Whorls ll 1 /^ to 141/2, 

 the first two very convex, following whorls convex, the last 

 somewhat flattened laterally near the aperture, rounded below, 

 shortly free and produced forward. The upper surface flat- 

 tened and even concave, a strong, blunt keel at its junction 

 with the outer face of the whorl. Aperture rounded below, 

 truncate above, the peristome white, reflexed throughout, a 

 low prominence of the horizontal parietal margin projecting 

 inward near the outer angle of the aperture, which is thereby 

 somewhat spout-like. 



The internal column is rather small and cylindrical, of about 

 equal calibre from the penultimate whorl to near the apex. 

 About 4 whorls from the last there arises a slight spirally 

 running swelling near the anterior partition in each whorl. 

 In the beginning of the penultimate whorl a strong lamella is 

 superposed upon this swelling, and runs 1^2 whorls down; it 

 increases rapidly, and diminishes slowly below, continuing but 

 a little way in the last whorl. A strong, wide, outward- 

 flaring parietal lamella arises with the columellar lamella, and 

 runs about % of a whorl. A short basal lamella arises a little 

 later than the preceding two, and extends about one-fourth of 

 a whorl downward. An acute but rather low palatal lamella 

 arises with the last, and runs about y 2 of a whorl. In fresh 

 specimens this is visible from the outside as a whitish line on 

 the front of the penultimate whorl. 



Length 15, diam. 3.6 mm. ; whorls 14y 2 . 



Length 14, diam. 4 mm. ; whorls 14. 



Length 11%, diam. 4 mm. ; whorls 12. 



Length 11, diam. 3y 2 mm. ; whorls 12. 



Texas: On the Blanco River (B. F. Shumard) ; New Braun- 

 fels, Comal Co. (J. A. Singley) ; Dallas (J. Boll). 



Cylindrella goldfussi MENKE, Zeitschr. f. Malak., 1847, p. 

 2. PHILIPPI, Abbild. u. Beschreib., iii, p. 6, pi. 3, f. 9. 



